Memaloose Airport
25U · Imnaha, OR · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:44 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:00 AM | 12:00Z |
| Sunrise | 05:34 AM | 12:34Z |
| Sunset | 08:11 PM | 03:11Z |
| Evening civil twilight Loggable night begins | 08:44 PM | 03:44Z |
Plan a flight from 25U
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 17RIGHT trafficRP · charted
- Heading
- 173° mag · 191° true
- Dimensions
- 3,300 × 120 ft
- TPA
- 7,700 ft MSL (≈1,000 AGL) · standard
- Surface
- Dirt
- CTAF
- 122.9
Enter the right downwind (heading 353°) on the 45° at 7,700 ft MSL (≈1,000 AGL).
More details — RWY 17
- Approach obstacle
- Trees, 15 ft, 50 ft from threshold, 0 ft B of centerline — 3:1 slope to clear · penetrates the 20:1 visual approach surface
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 3,300 ft |
Prefer one flat page? Full runway details for 25U → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 25U kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All 25U frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 25U
- Coordinates
- 45.4277, -116.6940
- Elevation
- 6,708 ft MSL
- Magnetic variation
- 18E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- MC MINNVILLE · 1-800-WX-BRIEF
- NOTAM facility
- MMV
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1949/11
- Distance from city
- 10 SE
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- NONE
- Powerplant service
- NONE
Ownership & management 2 contacts
Remarks FAA · 10 notes
General
- CLSD WINTERS
- EARLY SPRING: DAMP SOFT SPOT ON NORTH END OF RWY; LAND LONG TO SOUTH.
- RY 35 EXPECT DOWNDRAFTS ON SHORT FINAL DUE TO SHEER DROP IN TERRAIN.
- LIVESTOCK AND WILDLIFE ON & INVOF ARPT.
- RY 17 SLOPES UP 2.5 % TO SOUTH.
- NO LINE OF SIGHT BTN RY ENDS.
- RY 35 HAS 9 INCH BERM ALONG L SHOULDER 500 FT.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
Runways
- THLD MKD BY WHITE ROCKS ACROSS RY END.
- LOOSE 3 IN - 6 IN ROCKS ON RWY; RWY FAIR DEFINED FOR GRVL TURF RWY. SOUTH 1000 FT RUF & OVERGROWN WITH WEEDS.
Nearby airports
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Also nearby: O68 Sluice Creek Airport (5 NM) · OR01 Temperance Creek USFS Airport (private) (9 NM) · O29 Pittsburg Landing Airport (15 NM) · 1S7 Slate Creek Airport (22 NM) · OR8 Dug Bar Airport (23 NM) · JSY Joseph State Airport (24 NM)
About 25U
Memaloose Airport (25U) is an airport in Imnaha, OR, at 6,708 ft MSL. It has 1 runway, the longest 3,300 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 25U, refreshed from the Aviation Weather Center and FAA NASR.
Does 25U have a control tower?
No. Memaloose Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 25U?
Memaloose Airport has 1 runway; the longest is 3,300 ft. See the Runways section for headings, surface, and lighting.
Where is 25U?
Memaloose Airport is in Imnaha, OR, at an elevation of 6,708 ft MSL. Coordinates: 45.4277, -116.6940.
Fly out of 25U often?
Save 25U as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 25U in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.